a fire down below that ntsb and boeing investigators have traced to the auxiliary power battery unit. >> it was a moderate fire condition in the modern avionics department that included the batteries and some of the electronic equipment. >> reporter: according to reports, one firefighter was injured battling monday's fire. boeing said of the fire, quote, nothing that we've seen in this case indicates a relationship to any previous 787 power system events, which involved power panel faults elsewhere in the aft electrical equipment bay. clearly, this is not the pr they dreamed about. >> i'll fly on a 787 any time. i have absolute confidence in the airplane. there are going to be teething problems with a new airplane. it's quite common. >> reporter: in light of all of this, united airlines says it will examine its fleet of 787s, looking for any signs of trouble. natalie? >> ron mott in boston. thanks so much, ron. >>> aig is considering whether or not to join a lawsuit against the government over the $182 billion bailout that saved the company back in 2008. aig's decision on whether or n